/*
 * Licensed to the Apache Software Foundation (ASF) under one or more contributor license agreements. See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership. The ASF licenses this file to You under the Apache License, Version
 * 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at
 * http://www.apache.org/licenses/LICENSE-2.0 Unless required by applicable law or agreed to in writing, software distributed under the
 * License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for
 * the specific language governing permissions and limitations under the License.
 */

package jmine.tec.test.junit.runner.formatter;

import java.io.IOException;
import java.io.OutputStream;
import java.text.NumberFormat;

import jmine.tec.test.junit.runner.JUnitTest;
import junit.framework.AssertionFailedError;
import junit.framework.Test;

import org.apache.tools.ant.BuildException;

/**
 * Prints short summary output of the test to Ant's logging system.
 */

public class SummaryJUnitResultFormatter implements JUnitResultFormatter {

    private static final double ONE_SECOND = 1000.0;

    /**
     * Formatter for timings.
     */
    private NumberFormat nf = NumberFormat.getInstance();

    /**
     * OutputStream to write to.
     */
    private OutputStream out;

    private boolean withOutAndErr = false;

    private String systemOutput = null;

    private String systemError = null;

    /**
     * Empty
     */
    public SummaryJUnitResultFormatter() {
    }

    /**
     * The testsuite started.
     * 
     * @param suite the testsuite.
     */
    public void startTestSuite(JUnitTest suite) {
        String newLine = System.getProperty("line.separator");
        StringBuffer sb = new StringBuffer("Running ");
        sb.append(suite.getName());
        sb.append(newLine);

        try {
            this.out.write(sb.toString().getBytes());
            this.out.flush();
        } catch (IOException ioex) {
            throw new BuildException("Unable to write summary output", ioex);
        }
    }

    /**
     * Empty
     * 
     * @param t not used.
     */
    public void startTest(Test t) {
    }

    /**
     * Empty
     * 
     * @param test not used.
     */
    public void endTest(Test test) {
    }

    /**
     * Empty
     * 
     * @param test not used.
     * @param t not used.
     */
    public void addFailure(Test test, Throwable t) {
    }

    /**
     * Interface TestListener for JUnit &gt; 3.4.
     * <p>
     * A Test failed.
     * 
     * @param test not used.
     * @param t not used.
     */
    public void addFailure(Test test, AssertionFailedError t) {
        this.addFailure(test, (Throwable) t);
    }

    /**
     * Empty
     * 
     * @param test not used.
     * @param t not used.
     */
    public void addError(Test test, Throwable t) {
    }

    /** {@inheritDoc}. */
    public void setOutput(OutputStream output) {
        this.out = output;
    }

    /** {@inheritDoc}. */
    public void setSystemOutput(String systemOutput) {
        this.systemOutput = systemOutput;
    }

    /** {@inheritDoc}. */
    public void setSystemError(String err) {
        this.systemError = err;
    }

    /**
     * The whole testsuite ended.
     * 
     * @param suite the testsuite.
     */
    public void endTestSuite(JUnitTest suite) {
        String newLine = System.getProperty("line.separator");
        StringBuffer sb = new StringBuffer("Tests run: ");
        sb.append(suite.runCount());
        sb.append(", Failures: ");
        sb.append(suite.failureCount());
        sb.append(", Errors: ");
        sb.append(suite.errorCount());
        sb.append(", Time elapsed: ");
        sb.append(this.nf.format(suite.getRunTime() / ONE_SECOND));
        sb.append(" sec");
        sb.append(newLine);

        if (this.withOutAndErr) {
            if (this.systemOutput != null && this.systemOutput.length() > 0) {
                sb.append("Output:").append(newLine).append(this.systemOutput).append(newLine);
            }

            if (this.systemError != null && this.systemError.length() > 0) {
                sb.append("Error: ").append(newLine).append(this.systemError).append(newLine);
            }
        }

        try {
            this.out.write(sb.toString().getBytes());
            this.out.flush();
        } catch (IOException ioex) {
            throw new BuildException("Unable to write summary output", ioex);
        } finally {
            if (this.out != System.out && this.out != System.err) {
                try {
                    this.out.close();
                } catch (IOException e) {
                    // ignore
                }
            }
        }
    }
}
